Contentious usage: precise definition, application to specific cases, and distinction from similar terms varies by author. Narrowly, a government in which everything is political and controlled by the state, coined to describe fascism, in contrast to the older terms and concepts of autocracy, dictatorship, and tyranny, which focus more on centralization of power, not its pervasiveness. Later applied to communism, to emphasize its commonalities with fascism. Sometimes considered an extreme form of authoritarianism, in other cases contrasted with it.